switcher is Sony service supporting private communication protocol over USB. It seats on device, listens for USB states and executes commands sent by Reader for PC (or ebook_msc.exe) via DeviceAccessor.dll. All those get, um, etc.
I doubt it is kernel bug - more than likely (if you are right) it is switcher itself since it is sufficiently different between 1.04 and Russian version of firmware (2.0...)
Last edited by rupor; 06-16-2012 at 09:30 AM.